org.eclipse.wst.common.project.facet.ui.internal.util.HeaderToolTip.java Source code

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Here is the source code for org.eclipse.wst.common.project.facet.ui.internal.util.HeaderToolTip.java

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/******************************************************************************
 * Copyright (c) 2010 Oracle
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Konstantin Komissarchik - initial implementation and ongoing maintenance
 ******************************************************************************/

package org.eclipse.wst.common.project.facet.ui.internal.util;

import static java.lang.Math.max;
import static org.eclipse.jface.resource.JFaceResources.getColorRegistry;
import static org.eclipse.jface.resource.JFaceResources.getDefaultFont;
import static org.eclipse.jface.resource.JFaceResources.getFontRegistry;
import static org.eclipse.wst.common.project.facet.ui.internal.util.GridLayoutUtil.gdfill;
import static org.eclipse.wst.common.project.facet.ui.internal.util.GridLayoutUtil.gdhfill;
import static org.eclipse.wst.common.project.facet.ui.internal.util.GridLayoutUtil.gdwhint;
import static org.eclipse.wst.common.project.facet.ui.internal.util.GridLayoutUtil.gl;
import static org.eclipse.wst.common.project.facet.ui.internal.util.GridLayoutUtil.glmargins;
import static org.eclipse.wst.common.project.facet.ui.internal.util.SwtUtil.getPreferredWidth;

import org.eclipse.jface.window.ToolTip;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;

/**
 * @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a>
 */

public abstract class HeaderToolTip

        extends ToolTip

{
    private static final String HEADER_BG_COLOR = HeaderToolTip.class.getName() + ".TOOLTIP_HEAD_BG_COLOR"; //$NON-NLS-1$

    private static final String HEADER_FG_COLOR = HeaderToolTip.class.getName() + ".TOOLTIP_HEAD_FG_COLOR"; //$NON-NLS-1$

    private static final String HEADER_FONT = HeaderToolTip.class.getName() + ".TOOLTIP_HEAD_FONT"; //$NON-NLS-1$

    static {
        getColorRegistry().put(HEADER_BG_COLOR, new RGB(255, 255, 255));
        getColorRegistry().put(HEADER_FG_COLOR, new RGB(0, 0, 0));

        final String defaultFontName = getDefaultFont().getFontData()[0].getName();
        final FontData[] fontData = getFontRegistry().getBold(defaultFontName).getFontData();

        getFontRegistry().put(HEADER_FONT, fontData);
    }

    public HeaderToolTip(final Control control) {
        super(control);

        setPopupDelay(1000);
        setShift(new Point(10, 3));
    }

    @Override
    protected final Composite createToolTipContentArea(final Event event, final Composite parent) {
        final Composite composite = new Composite(parent, SWT.NONE);
        final GridLayout layout = glmargins(gl(1), 0, 0);
        layout.verticalSpacing = 1;
        composite.setLayout(layout);

        final Composite topArea = new Composite(composite, SWT.NONE);
        topArea.setBackground(getColorRegistry().get(HEADER_BG_COLOR));
        topArea.setLayout(glmargins(gl(3), 5, 5, 2, 2));

        final Label titleLabel = new Label(topArea, SWT.NONE);
        titleLabel.setLayoutData(gdfill());
        titleLabel.setBackground(getColorRegistry().get(HEADER_BG_COLOR));
        titleLabel.setFont(getFontRegistry().get(HEADER_FONT));
        titleLabel.setForeground(getColorRegistry().get(HEADER_FG_COLOR));
        titleLabel.setText(getToolTipTitle(event));

        final Control content = createContentArea(event, composite);

        final int width = max(getPreferredWidth(titleLabel) + 50, 300);
        topArea.setLayoutData(gdwhint(gdhfill(), width));
        content.setLayoutData(gdwhint(gdfill(), width));

        return composite;
    }

    protected abstract String getToolTipTitle(Event event);

    protected abstract Composite createContentArea(Event event, Composite parent);
}